Perhaps the only difference was the coach and not even the tactics but the determination, De Rossi is hungry and wants to demonstrate that he is capable, so he is really bringing that extra value to the team, the desire to win and his determination
At least I see it that way
in short, they are not very equal at all, the simple statistics and also the position in the rankings say so
Lazio suffers from not having a serious striker, Immobile seems like a totally absent ghost, in fact we didn`t see much in the match, or better zero
Derbies are always very special matches, usually very hard fought and drawn until the end of the match, we rarely see goleades in a derby, especially in the one between Roma and Lazio. But statistics in hand, Roma are clearly stronger than Lazio and the table speaks for itself and I totally agree with bastisisca on this. Immobile is now in the waning phase of his career, perhaps Simone Inzaghi's departure from the Lazio bench has penalised his performance a lot.